have 加過去分詞是什麼時態

來源:才華庫 2.24W

二、用法:

have加過去分詞表示動作發生在過去對現在的影響

had加過去分詞是指過去某一動作之前已經發生或完成的動作,即動作有先後關係,動作在前的用過去完成時,在後的用一般過去時。

三、常用時間狀語:

have加過去分詞

1、表示到現在為止:already ,yet ,just ,ever, never ,before ,since ,so far, until now ,by now ,up to now.

2、表示最近:recentl,lately in the past/last few years

3、包含現在在內的時間狀語:this morning/afternoon,all the  year ,all day

had加過去分詞

分兩種情況:

由時間狀語來判定

與過去完成時連用的時間狀語有:

1、如:I had finished reading the novel by nine o'clock last night.

2、如:We had learned over two thousand English words by the end of last term.

3、 before + 過去的時間點。

如:They had planted six hundred trees before last Wednesday

由“過去的過去”來判定。

1、當賓語從句的主句為一般過去時,且從句的動作先於主句的動作時,從句要用過去完成時。在told, said, knew, heard, thought等動詞後的賓語從句。

如:She said that she had seen the film before.

2、狀語從句中

在時間、條件、原因、方式等狀語從句中,主、從句的動作發生有先後關係,動作在前的,要用過去完成時,動作在後的`要用一般過去時。

如:After he had finished his homework, he went to bed.

注意: before, after 引導的時間狀語從句中,由於 before 和 after 本身已表達了動作的先後關係,若主、從句表示的動作緊密相連,則主、從句都用一般過去時。

如:After he closed the door, he left the classroom.

3、表示意向的動詞,如hope, wish, expect, think, intend, mean, suppose等,用過去完成時表示"原本…,未能…"

如:We had hoped that you would come, but you didn't.

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